package com.wang.nowcoder.controller;

import com.google.code.kaptcha.Producer;
import com.sun.org.apache.xpath.internal.operations.Mod;
import com.wang.nowcoder.pojo.User;
import com.wang.nowcoder.service.UserService;
import com.wang.nowcoder.util.CommunityConstant;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author wang
 * @ClassName LoginController
 * @Description TODO
 * @date 2021/12/15 19:55
 * @Version 1.0
 */
@Controller
public class LoginController implements CommunityConstant {

    private static final Logger logger = LoggerFactory.getLogger(LoginController.class);

    @Autowired
    private UserService userService;

    @Autowired
    private Producer kaptchaProducer;

    /**
     * 跳转到注册页面
     * @return
     */
    @RequestMapping("/register")
    public String goRegister(){
        return "/site/register";
    }

    /**
     * 跳转到登录页面
     * @return
     */
    @GetMapping("/login")
    public String goLogin(){
        return "/site/login";
    }

    /**
     * 注册账号
     * @param model
     * @param user
     * @return
     */
    @PostMapping("/register")
    public String register(Model model, User user){
        Map<String , Object> map = userService.register(user);
        if (map == null || map.isEmpty()){
            model.addAttribute("msg","注册成功，我们已经向您的邮箱发送了一份激活邮件，请尽快激活");
            model.addAttribute("target","/index");
            return "/site/operate-result";
        }else {
            model.addAttribute("userNameMsg",map.get("userNameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            model.addAttribute("emailMsg",map.get("emailMsg"));
            return "/site/register";
        }
    }

    /**
     * 判断账号激活状态
     * @param model
     * @param userId
     * @param code
     * @return
     */
    @RequestMapping(path = "activation/{userId}/{code}",method = RequestMethod.GET)
    public String activation(Model model, @PathVariable("userId") int userId,@PathVariable("code") String code){
        int result = userService.activation(userId, code);
        if (result == ACTIVATION_SUCCESS){
            model.addAttribute("msg","激活成功");
            model.addAttribute("target","/login");
        }else if (result == ACTIVATION_REPEAT){
            model.addAttribute("msg","该账号已经激活！");
            model.addAttribute("target","/index");
        }else {
            model.addAttribute("msg","激活失败,您提供的激活码不正确");
            model.addAttribute("target","/index");
        }
        return "/site/operate-result";
    }

    /**
     * 生成验证码
     * @param response
     * @param session
     */
    @RequestMapping(path = "/kaptcha",method = RequestMethod.GET)
    public void getKaptcha(HttpServletResponse response, HttpSession session){
        //生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);

        //将验证码存入session
        session.setAttribute("kaptcha",text);

        //将图片输出给浏览器
        response.setContentType("image/png");
        try {
            ServletOutputStream outputStream = response.getOutputStream();
            ImageIO.write(image,"png",outputStream);
        } catch (IOException e) {
            logger.error("响应验证码失败"+e.getMessage());
        }
    }

    /**
     * 登录
     * @param userName
     * @param password
     * @param code
     * @param remember
     * @param model
     * @param session
     * @param response
     * @return
     */
    @PostMapping("/login")
    public String login(String userName,String password,String code,boolean remember,
                        Model model,HttpSession session,HttpServletResponse response){
        String kaptcha = (String) session.getAttribute("kaptcha");
        //检查验证码
        if (StringUtils.isBlank(kaptcha) || StringUtils.isBlank(code)|| !kaptcha.equalsIgnoreCase(code)){
            model.addAttribute("codeMsg","验证码不正确");
            return "/site/login";
        }
        //检查账号，密码
        int expiredSeconds = remember ? REMEMBER_EXPIRED_SECONDS:DEFAULT_EXPIRED_SECONDS;
        Map<String, Object> loginMap = userService.login(userName, password, expiredSeconds);
        if (loginMap.containsKey("ticket")){
            Cookie cookie = new Cookie("ticket",loginMap.get("ticket").toString());
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/index";
        }else {
            model.addAttribute("userNameMsg",loginMap.get("userNameMsg"));
            model.addAttribute("passwordMsg",loginMap.get("passwordMsg"));
            return "/site/login";
        }
    }

    @RequestMapping("/loginOut")
    public String loginOut(@CookieValue("ticket") String ticket, HttpServletRequest request){
        userService.loginOut(ticket);
        return "redirect:/login";
    }
}
